fix(swarm): ignore local evidence in default gate

[boshu2]

Summary

• Make no-arg swarm evidence validation scan tracked evidence in git worktrees, avoiding failures from ignored local .agents/ artifacts.
• Keep explicit file/directory validation strict for all supplied evidence.
• Add BATS coverage for ignored local evidence, explicit invalid directory validation, and tracked evidence validation.

Bead

• na-uuy.4.1

Validation

• bash -n scripts/validate-swarm-evidence.sh
• shellcheck --severity=error scripts/validate-swarm-evidence.sh
• bats tests/scripts/validate-swarm-evidence.bats
• root default-mode probe with local ignored evidence
• explicit invalid directory probe
• git diff --check
• env -u AGENTOPS_RPI_RUNTIME scripts/pre-push-gate.sh --fast

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Limit tracked scan to top-level evidence files

In no-arg mode, git ls-files -z -- "$EVIDENCE_DIR" walks the directory recursively, so this path now validates *.json files in nested subdirectories (for example archived results) that were previously excluded by the find ... -maxdepth 1 behavior and are still excluded in explicit directory mode. In repos that keep historical/auxiliary JSON under .agents/swarm/results/**, this can cause unexpected gate failures unrelated to current evidence; filter to top-level files to preserve the prior contract.

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